Home / 26,431.80-36,456.84-16,991.34

Finding the Fourth Proportional to 26,431.80, 36,456.84 and 16,991.34

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Solution

The fourth proportional to 26,431.80, 36,456.84 and 16,991.34 is: 23,435.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,431.80 : 36,456.84 = 16,991.34 : x
  2. Step 2: Convert to fraction form
    26,431.80/36,456.84 = 16,991.34/x
  3. Step 3: Cross multiply
    26,431.80x = 36,456.84 × 16,991.34
  4. Step 4: Simplify right side
    26,431.80x = 619,450,563.77
  5. Step 5: Solve for x
    x = 619,450,563.77/26,431.80
  6. Step 6: Final answer
    x = 23,435.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.